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Improvement of Multifunctional Automotive Textile TEKSTİL VE KONFEKSİYON Vol: 29, No.: 2 DOI: 10.32710/tekstilvekonfeksiyon.475490 Improvement of Multifunctional Automotive Textile Zeynep Ömeroğulları Başyiğit * Uşak University, Faculty of Engineering, Textile Engineering Department, Uşak, Turkey Corresponding Author: Zeynep Ömeroğulları Başyiğit, [email protected] ABSTRACT ARTICLE HISTORY In order to improve multifunctional automotive textile, required functionalities that have been expected by the automotive industry were enhanced in this study. For this aim, flame retardant and water-oil Received: 28.10.2018 repellent effects were achieved on 100 % polyester based automotive fabrics via pad-dry-cure system Accepted: 27.03.2019 with performed finishing recipes. After functionalization of the fabrics, polyurethane based foams were laminated to the treated automotive textiles. In order to be able to compare the results of tests and to determine the effects of used chemicals on the functionalities of fabrics, chemical amounts of recipe were optimized and the results were discussed. Flame retardancy, water repellency and oil repellency tests were performed before and after abrasion tests. Color spectrums of treated fabrics were tested after chemical finishing applications. Morphological analyses of samples were tested by SEM and chemical structures of the fabrics were analyzed by FTIR-ATR. According to performance test results, KEYWORDS multifunctional automotive textile including flame retardant and water-oil repellent effect was achieved successfully. During the burning test, it was determined that laminated textile structure was self- Automotive textile, flame retardant, water-oil repellent, extinguished whereas 3M water repellency grades were at the highest value before abrasion tests. chemical finishing application 1. INTRODUCTION used in the manufacturing processes [4-6]. Car seat fabric requires considerable technical input to produce both the Automotive textiles have one of the most valuable world aesthetic and also very demanding requirements such as markets for technical textiles and there is a broad spectrum reduced flammability, abrasion resistance, resistance to of products comprising novel textile structures and high sunlight, soil resistance and UV degradation [2,7]. Since quality design. Automotive technical textiles include wide seat covers cannot be washed in washing machine, these range of materials such as upholstery and seating, floor must show strong soil masking behavior [1,8]. The design covering trunk liners, headliners door and side-panel and performance properties of technical textiles present in coverings, pillar coverings as well as safety belts, airbags, automotive interiors are among the most important criteria thermal and sound insulators, tyres and textile-reinforced for consumer satisfaction and this design and performance flexible and hard composites. The textiles for interior criteria could be varied according to consumer’s furnishings are primarily made of woven, warp knitted, weft requirement [1,2]. knitted, laminated fabrics and nonwovens [1-3]. Automobile seat upholstery generally includes multi- The requirements for textile structures used in automotives component structures. The seat covering is composed of are different from those used in clothing and other foam cushion mostly made up of polyurethane, for the seat applications. The performance of the automotive textiles, back and bottom and a trim component including a face which constitute approximately 20-25 kg in a car, depends material, predominantly a polyester fabric, foam backing, on the fibre properties, fabric structures and various finishes mostly made up of polyurethane and a reinforcing scrim To cite this article: Ömeroğulları Başyiğit, Z. 2019. Improvement of multifunctional automotive textile. Tekstil ve Konfeksiyon. 29(2), 113-120. TEKSTİL ve KONFEKSİYON 29(2), 2019 113 material, generally polyamide knitted fabric. On the top Nowadays, when compared to mono-functional textiles, the surface, weaved or knitted textile fabric can be used as well request for multifunctional textile materials has been [3,9]. Polyurethane based foams which exist under the top increased especially in the automotive textile industry. Since surface layer, are laminated to the fabric in various ways [3, the goal of the finishing operations undertaken by upholstery 10-15]. Laminated polyurethane foams provide comfortable manufacturers is the same “to bestow fabrics with particular feeling and prevent the wrinkling of the top surface. Usually aesthetic and functional qualities”, multifunctional the bottom layer of the assembly is furnished with a knitted, automotive textile was improved in this study. Flame nonwoven, or film backing, to impart dimensional stability retardant and water-oil repellent effects were achieved on and prevent excessive foam wear. Over many years, these 100% polyester based automotive upholstery fabrics via layers have been combined on a large scale by flame pad-dry-cure system with performed finishing recipes. After lamination (Fig.1), since ample production rates and low functionalization of the fabrics, polyurethane based foams cost have ensured good returns to processors [16,17]. were laminated to the treated automotive fabrics. According to the performance tests results, flame retardant and water- oil repellent effect was achieved successfully and it was determined that laminated textile structure showed self- extinguishing behavior whereas 3M water repellency grades were at the highest value before abrasion tests. 2. EXPERIMENTAL DETAILS 2.1 Material 100% polyester double-face knitted fabrics with two different densities (36 wales x 22 courses, 50 g/m2) and (28 wales x 22 courses, 40 g/m2) and polyurethane based foams (density with 32 g/m3) were supplied by Martur Company (Turkey). Polyethylene based softener was taken from Tanatex (Turkey) and fluoroalkyl acrylate copolymer was gently supplied by Daikin America, NY, USA while nitrogen containing phosphonic acid salt as a flame retardant agent and Invadine PBN as an anionic surfactant were purchased from Huntsman Textile Effects (Charlotte, USA). CaCO3 based non-durable flame retardant agent was gently supplied by Kale Natural and anionic surfactant was added into the finishing bath as a wetting agent. 2.2 Method Figure 1. Flame lamination [10] 100% polyester double-face knitted fabrics with two different In flame lamination, a layer of foam is exposed to an open densities were used in this study. Both fabrics were flame at around 950 C which causes its uppermost surface generally used as transportation upholstery fabrics in the to melt. While the foam is molten, it is fed into an textile market. The dyeing procedure was carried out with arrangement of nip rollers which presses an incoming layer disperse dyestuff Foron Black AS-3LF in HT conditions. Two of fabric onto its surface, as depicted in Fig. 1. When the chemical finishing recipes were used in pad-dry-cure system laminate has cooled, strong chemical bonds develop (Mathis VFM, vertical padder and Mathis oven PTE-B) for between the adjacent layers [3,10,12,16]. this study in order to optimize the amounts and to determine the effects of chemical agents on the functionalities of the For the upholstery fabrics with improved functional textile structures. In order to improve the flame retardancy characteristics, the selection of the top surface fabric is and water-oil repellency effect of upholstery fabrics, 200 g/L important as well as the selection of functionalities that are nitrogen containing phosphonic acid salt, 5 g/L anionic to be applied on. The volume of upholstery fabric used per 2 surfactant, 20 g/L polyethylene based softener and 80 g/L vehicle varies by region however an average 5-6 m of fluoroalkyl acrylate copolymer were used in both recipes of fabric are used in cars for upholstery [6]. It should be also finishing process. In recipe 1, while 125 g/L CaCO3 based emphasized that warp-knitting sector has broadened its chemical solution was added into the bath, in the second market base and especially has expanded into automotive recipe, this amount was used as 200 g/L. After applying all industry [1-3]. Due to its significant mechanical primary and auxiliary chemicals in padding bath with a wet performance, polyester has been established as the most pick- up ratio as 85%, the fabrics were dried at 11 °C for 1-2 popular fibre for automotive textiles. On the whole, polyester min, and then cured at 145 °C for 2 min. The knitted fibre provides good mechanical performance including good polyester fabrics which had multifunctional finishing abrasion resistance, high dimensional stability, excellent application were laminated with polyurethane foams in flame resistance to photo-oxidative degradation, and high light laminator (Mario Crosta). All fabrics were laminated with fastness [16]. flame lamination method in speed of 30 m/min. Codes of treated fabrics were shown in Table 1 below. 114 TEKSTİL ve KONFEKSİYON 29(2), 2019 Table 1. Codes of samples Codes of samples Explanation 2 UF1 Untreated 50 g/m polyester fabric 2 UF2 Untreated 40 g/m polyester fabric 2 F1A 50 g/m polyester fabric that treated with recipe 1 2 F2A 40 g/m polyester fabric that treated with recipe 1 2 F1B 50 g/m polyester fabric that treated with recipe 2 2 F2B 40 g/m polyester fabric that treated with recipe 2 2 LF1A Laminated textile composite material that included 50 g/m polyester fabric which treated with recipe 1 2 LF2A Laminated textile composite material that included
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